A tubule is a very small tube or fistular structure.
A system of surface-connected membranes in muscle that enables a nerve impulse to travel to the interior of the muscle fibre.
In anatomy, a tubule is a minute tube lined with glandular epithelium.
Tubules can be found on poisonous sea creatures.
These are tiny tubes in the biologial structure of the living items.
The cells of the tubules remove certain molecules and ions from the blood and deposit these into the fluid within the tubules.